# abscissa

[ab-sis-uh]

- (in plane Cartesian coordinates) the x-coordinate of a point: its distance from the y-axis measured parallel to the x-axis.

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Compare ordinate.

## Origin of abscissa

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for abscissa

### Historical Examples of abscissa

The abscissa of such a curve is the reading of the instrument to be corrected.

To provide for such cases the curve is drawn as if it never touched the abscissa.

LogicCarveth Read

A curve is thus obtained, the ordinate representing growth elongation and the abscissa the time.

Life Movements in PlantsSir Jagadis Chunder Bose

As the temperature is made to rise one degree per minute, the abscissa also represents rise of temperature (Fig. 66).

Life Movements in PlantsSir Jagadis Chunder Bose

A Thermo-crescent Curve is thus obtained, the ordinate of which represents increment of growth, and the abscissa, the time.

Life Movements in PlantsSir Jagadis Chunder Bose

## abscissa

- the horizontal or x -coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the y -axis measured parallel to the x -axisCompare ordinate

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## Word Origin for abscissa

C17: New Latin, originally linea abscissa a cut-off line

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Word Origin and History for abscissa

Online Etymology Dictionary, © 2010 Douglas Harper

## abscissa

[ăb-sĭs′ə]

- The distance of a point from the y-axis on a graph in the Cartesian coordinate system. It is measured parallel to the x-axis. For example, a point having coordinates (2,3) has 2 as its abscissa. Compare ordinate.

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The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.